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authorAndré Nusser <andre.nusser@googlemail.com>2018-06-16 12:52:22 +0200
committerBent Bisballe Nyeng <deva@aasimon.org>2018-08-12 11:13:52 +0200
commit20bdae6c72192c87bf95c6ac86c8cc049aa1ab5a (patch)
treeaf9a05df8553fda7bbbb5dd33b165954643059e7 /src/grid.h
parent1dfdc13bb191321a096ceae605b80bde0d627398 (diff)
Add new Grid class. (which is header only due to template)
Diffstat (limited to 'src/grid.h')
-rw-r--r--src/grid.h137
1 files changed, 137 insertions, 0 deletions
diff --git a/src/grid.h b/src/grid.h
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+++ b/src/grid.h
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+/* -*- Mode: c++ -*- */
+/***************************************************************************
+ * grid.h
+ *
+ * Sat Jun 16 11:52:08 CEST 2018
+ * Copyright 2018 André Nusser
+ * andre.nusser@googlemail.com
+ ****************************************************************************/
+
+/*
+ * This file is part of DrumGizmo.
+ *
+ * DrumGizmo is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * DrumGizmo is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with DrumGizmo; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+#pragma once
+
+#include <vector>
+
+template <typename T>
+class Grid
+{
+public:
+ using Index = std::size_t;
+ struct Pos
+ {
+ T x, y;
+
+ Pos(T x, T y) : x(x), y(y) {}
+ };
+
+ Grid() = default;
+ Grid(Index width, Index height);
+ Grid(Index width, Index height, T value);
+
+ bool is_valid(Index x, Index y) const;
+ bool is_valid(Pos pos) const;
+
+ Index width() const;
+ Index height() const;
+ T operator()(Pos pos) const;
+ T operator()(Index x, Index y) const;
+ T& operator()(Pos pos);
+ T& operator()(Index x, Index y);
+
+ void resize(Index width, Index height);
+ void assign(Index width, Index height, T value);
+
+private:
+ Index _width;
+ Index _height;
+ std::vector<T> _entries;
+
+};
+
+template <typename T>
+Grid<T>::Grid(Index width, Index height)
+ : _width(width), _height(height), _entries(_width*_height) {}
+
+template <typename T>
+Grid<T>::Grid(Index width, Index height, T value)
+ : _width(width), _height(height), _entries(_width*_height, value) {}
+
+template <typename T>
+bool Grid<T>::is_valid(Index x, Index y) const
+{
+ return x >= 0 && x < _width && y >= 0 && y < _height;
+}
+
+template <typename T>
+bool Grid<T>::is_valid(Pos pos) const
+{
+ return is_valid(pos.x, pos.y);
+}
+
+template <typename T>
+auto Grid<T>::width() const -> Index
+{
+ return _width;
+}
+
+template <typename T>
+auto Grid<T>::height() const -> Index
+{
+ return _height;
+}
+
+template <typename T>
+T Grid<T>::operator()(Pos pos) const
+{
+ return _entries.at(pos.x + _width*pos.y);
+}
+
+template <typename T>
+T Grid<T>::operator()(Index x, Index y) const
+{
+ return _entries.at(x + _width*y);
+}
+
+template <typename T>
+T& Grid<T>::operator()(Pos pos)
+{
+ return _entries.at(pos.x + _width*pos.y);
+}
+
+template <typename T>
+T& Grid<T>::operator()(Index x, Index y)
+{
+ return _entries.at(x + _width*y);
+}
+
+template <typename T>
+void Grid<T>::resize(Index width, Index height)
+{
+ _width = width;
+ _height = height;
+ _entries.resize(_width*_height);
+}
+
+template <typename T>
+void Grid<T>::assign(Index width, Index height, T value)
+{
+ _width = width;
+ _height = height;
+ _entries.assign(_width*_height, value);
+}